Three steps were of necessity to project into the boudoir:
they are therefore made triangular steps; and instead of being rested on
the floor, as usual, they are made fast at their broad end to the stair
door, swinging out and in, with that. When it shuts, it runs them under
the other steps; when open it brings them out to their proper place. In
the kitchen garden, are three pumps, worked by one horse. The pumps
are placed in an equilateral triangle, each side of which is of about
thirty-five feet. In the centre is a post, ten or twelve feet high,
and one foot in diameter. In the top of this, enters the bent end of a
lever, of about twelve or fifteen feet long, with a swingle-tree at the
other end. About three feet from the bent end, it receives, on a pin,
three horizontal bars of iron, which at their other end lay hold of one
corner of a quadrantal crank (like a bell crank) moving in a vertical
plane, to the other corner of which is hooked the vertical handle of
the pump. The crank turns on its point as a centre, by a pin or pivot
passing through it. The horse moving the lever horizontally in a circle,
every point of the lever describes a horizontal circle.
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